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Re: Stock is better (archive)
[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Ben on January 11, 2002 at 17:02:51:

In Reply to: Stock is better posted by JamesM on January 11, 2002 at 12:16:40:

James,

Have you performed this modification on your e28 M5? What is the performance gain? How difficult is the installation? Where can I purchase the kit? Split Second web site? MOre details would be appreciated.

Thanks a bunch!
Ben Kraus



If you're talking about an E28 M5, then stay with the stock airbox and filter. K&N filters are proven to allow more dirt and larger particles into the engine. Also, the OEM panel filter is HUGE and has a very large surface area due to the depth and number of pleats. It also sucks air from right behind the headlights, not from hot air coming off the radiator.

The biggest single performance gain you can make is to get rid of the AFM. Split Second has a kit for $1000, but they also have a new programmable device coming out soon for less. That flap chokes the engine off at all RPMs.

JamesM




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